<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>jQuery时钟</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
<ul id="clock">
    <li id="sec"></li>
    <li id="hour"></li>
    <li id="min"></li>
</ul>
<script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js"></script>
<script src="main.js"></script>
</body>
</html>